Harry sutton pell



(No Model.)

' .H.S.PBLL.

PULLEY.

No. 605,557. Patented June 14, 15898.

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UNITED STATES PATENT QFFICE.

HARRY sUTToN PELL, oFToRoNTo, CANADA.v Y

PULL'EY.

sPEciFIcATIoN forming part orne/@ters Ptentno. 605,557, dated June 14, 189s.

Application led June 12, 1897. Serial No.' 640,421. (No model.)

T 6H whom, t may concer-rb: v Be it known that l, HARRY SUTTON PELL, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Pulleys, of which the following is a speciication.

My invention relates Ato improvements in pulleys; and the object of the -invention is to ery, the hub being preferably divided centrally on a line with the spokes and the parts being otherwise constructed and arranged as hereinafter more particularly explained.

Figure l is a sectional perspective View of a pulley constructed in accordance With my` invention. Fig. 2 is a center section parallel to the face'of the pulley. Fig. 3 is a longitudinal section through one of thev strips'of wood forming one-half of the peripheral face of a split pulley. Fig. 4 is an enlarged crosssectional detail through the periphery. Fig. 5 is a cross-sectional detail of an'alte'rnative form of the rim.

In the drawings like letters of reference indicate corresponding parts in v'each' iigurei A represents the peripheral face of the pulley, which is preferably formed of wood and made, When formed as a split pulley, preferably in two halves with notches a to permit of the bending of the strip of woodfrom the straight piece, as shown in Fig.-`A 3, 'into the arc desired. Supplemental notches Wa' are also provided. The edges of the strips .havel the inner projecting iianges or beads d2 and the outer face grooves ai outside of the iianges a2.

B are the spoke cross-heads, made of malleable, cast,l orjothergsuitable material, which have preferably inwardly-turned peripheral lips b, bent in the form shown, so as to securely bind the spoke cross-heads to the andl bolts e' to connect them together.

flanges d2 of the peripheral face A, and thus provide for the necessary grip in driving the peripheral face. The spoke cross-heads B fit VWithin lthe notches a', thus serving to further and more securely form Aa driving connection between the spoke cross-'heads and the face of the'pulley.

C is'a metal sheathing, preferably made of 6o sheet iron or steel and placed circumferentially within the face A. 'Ihe edges of the sheathing are preferably turnd inwardly into the grooves a3, thus serving to form retainingflanges b to prevent the displacement of the face A. The inturned beads b2 of the flanges b fit into the edge grooves 0.3 of the face A. The interior sheathing and face serve to form the rim, and such interior sheathing gives a solid foundation or rigidity to the Wood face, 7o

Without-which it would be too weak to allow of the pulleybeing made light, as if the rim were entirely 'formed of wood. The metal twisting, or splitting of the wood and at the same time givea neat and workman-like finish to the edges of the under face and insure safety from `accidents or bursting at high speed. I am also enabled to turn the wood 8o face perfectly true. .y The spoke cross-heads D. The hub is'preferably cast in two parts E and E, which are provided with anges e The ldividing -pointA ofv the hub is on a plane 9o through the axes of the spokes. Each part 'E ofthe hub is providedwith radial bosses having recesses e3, into which are fitted the ends of the spokes Df This form is suitable for yei'thera split orf'solid pulley. In a split 95 pulley the sheathing()1 would of course be divided slightly to one side of the abutting ends of-the face. It will be noticed from the' constructio shown that the pulley `is practically metallic, Ioo

cannot loosen by the shrinking or drying out of the Wood, nor does damp affect the article in any Way.

Although I describe one form of edge in order to confine and hold the face of the pulley in place, it Will be understood that I do not Wish to confine myself to any such form, as various other forms may be used and yet accomplish the obj ect which I have in viewviz., to form a binding driving connection between the spokes and the rim and to furnish an annular chamber for the reception of the material forming the belt-face.

In Fig. 5 I show a cross-section of the rim in which annular corrugations are formed in the sheathing. This form may be used where a particularly strong pulley is desired.

Although I describe the face as formed of wood, it will be understood that it might be formed of any suitable plastic light material, such as Wood-pu] p or light conipositio11,\vl1ich could be readily placed within the annular chamber formed by the sheathing and then trued up after being dried.

In the form of divided hub shown it will be seen that the divided hub may be readily separated and a new hub of larger or smaller diameter of bore substituted for any required size of shaft.

In the form shown in Fig. 5 it will also be not-iced that the turned-out fiange is reinforced by being doubled back on itself.

lVhat I claim as my invention is-a 1. In combination in a pulley, the belt-face l of light material, and a metal sheathing having side fianges, and beaded edges fitting the edges of said light material, substantially as described.

2. In a pulley, in combination the face provided with edge fianges, and the broad crossnotehes made across the interior wall of the face, the spoke cross-heads fitting into such notches, the interior sheathing having retaining edges to hold the face in place the spokes and means for connecting the spokes to the cross-heads as and for the purpose specified.

3. In a pulley, in combination the face provided with edge fianges, and the broad crossnotches made across the interior Wall of the face, the spoke cross-heads having threaded central bosses, the interior sheathing through which the bosses extend and the tubular spokes into which the threaded bosses extend and a suitable hub to receive the inner ends of the spokes as and for the purpose specified.

4. In a pulley, in combination the face provided With edge fianges, and the broad crossnotehes made across the interior wall of the face, the spoke cross-heads fitting into such notches, the interior sheathing having retaining edges to hold the faces in place the spokes and means for connecting the spokes to the cross-heads and the hub divided on the plane of the axes of the spokes and having flanges and bolts for securing the two parts of such hub together as and for the purpose specified.

5. In a pulley in combination, the face provided With edge fianges, the broad crossnotehes made across the interior wall of the face, the spoke cross-heads fitting into such notches and provided with inwardly-turned lips designed to embrace the flanges, the spokes suitably secured to the same and the interior sheathing through which the spokes extend as and for the purpose specified.

G. In a pulley, in combination, the face provided With the inner circumferential edge flanges and the outer circumferential edge grooves located within the flanges and the interior sheathing provided with the edge fianges and beads at their inner ends fitting Within the grooves of the edges of the face, the spokes, and hub, and means for connecting the spokes to the interior sheathing as and for the purpose specified.

7. A rim for a pulley comprising a metalV interior sheathing having inwardly-turned flanges reinforced by being turned back upon themselves and a filling of suitable material for such chamber forming the belt-face, said reinforced edges extending up Hush with the face of said filling and over the edge thereof, substantially as described as and for the purpose specified.

HARRY SUT' ON PELL.

IVitnesses:

13. BOYD, II. DENNIsoN. 

